Notes, Cellular result codes +crc, Syntax – Synaccess Networks NP-0801DTM User Manual
Page 51: Parameters and values, Voice hung up control +cvhu

3GPP TS 27.007 AT COMMANDS
51
HSPA+ AT Commands Reference Guide
Notes
Reference: 3GPP TS 27.007, GSM 04.08.
Cellular Result Codes +CRC
Set command controls whether the extended format of incoming call indication is used.
Read command returns current value of the parameter <mode>.
Test command returns supported values of the parameter <mode>.
Syntax
Command
Command type
AT+CRC=[<mode>]
Set
AT+CRC?
Read
AT+CRC=?
Test
Parameters and Values
<mode>
0
Disables extended format reporting. Default: 0.
1
Enables extended format reporting:
When enabled, an incoming call is indicated to the TE with unsolicited result code
+CRING: <type>
instead of the normal RING.
where
<type> ‐ call type:
ASYNC ‐ asynchronous transparent data
SYNC ‐ synchronous transparent data
REL ASYNC ‐ asynchronous non‐transparent data
REL SYNC ‐ synchronous non‐transparent data
VOICE ‐ normal voice (TS 11)
Notes
Reference: 3GPP TS 27.007.
Voice Hung Up Control +CVHU
Set command selects whether ATH or "drop DTR" causes a voice connection to be disconnected.
Read command reports the current value of the <mode> parameter, in the format: +CVHU: <mode>
Test command reports the range of supported values for parameter <mode>.
Syntax
Command
Command type
AT+CVHU=[<mode>]
Set
AT+CVHU?
Read
AT+CVHU=?
Test